Skip to main content
. 2013 Sep 3;9:44. doi: 10.1186/1744-8069-9-44

Figure 4.

Figure 4

Effects of intra-VL PAG microinjections of vehicle (0.05% DMSO in ACSF) or MMPIP (5 μg/0.2 μl) on tail flick-evoked burst of firing (A) and onset of the burst (B) of the ON cells or tail flick-evoked pause (C) and onset of the pause (D) of the OFF cells in sham and SNI rats 14 days after surgery. Each histogram represents the mean ± S.E.M of 6–7 neurons of different treated groups of rats. * indicates significant differences vs pretreatment values. P values < 0.05 were considered statistically significant.